A new QuadStore which combines the best of two worlds (Lucene/Fulltext search engines & TripleStores/RDF/SPARQL) is out and can be evaluated online.
TuQs offers the following feature:
- SAIL accessible
- True QuadStore with GraphSupport
- HighSpeed regex SPARQL filters
- Userrights on TripleBasis
- Extendable to a QuintStore (or more generally to an n-Store)
- Cachable SPARQL Queries for further speed improvement
- Clusterable
- Federationable
- FullTextSearchable
Some queries are really complex and high-speed, e.g.:
SELECT ?s ?o
WHERE {
?s <http://www.w3.org/2004/02/skos/core#definition> ?o .
?o <http://www.turnguard.com/tuqs/function#BooleanTerm> ‘Computer AND (java* OR HTML)’
}
The best starting point to find out, what´s the speciality of TuQS is here: Just click the sample queries on the right side and see how fast they perform even on very simple hardware.
Next steps: The developer of TuQS, Jürgen Jakobitsch (aka Turnguard), is currently working on SAIL inferencing.
Sounds great, but what’s the software license?
when I visit http://turnguard.com/tuqs/Umbel/sparql with IE7.0 as my browser I see no example queries where you say I should be seeing some.
Since the front end is prototypical, it wasn´t tested with all possible browsers. Please use IE8 instead (or Firefox).
At the moment TuQS is optimised and tested with various larger lod datasets like dbpedia or umbel.
After the ongoing evaluation phase, the software will be published as open source software, some add-ons will be available under commercial license.